Gear cutting tool



FIG. 1 is a perspective view of a gear cutting tool.

FIG. 2 is a front elevation view thereof. A rear elevation view, a right side elevation view and a left side elevation view are identical to the front elevation view.

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a bottom plan view thereof.

The broken lines shown in the drawings illustrate portions of the gear cutting tool that form no part of the claimed design. 

CLAIM The ornamental design for a gear cutting tool, as shown and described. 